Green Energy from Farmyard Manure and Human Waste?

The DeBugger project is investigating how to extract green energy from farmyard manure and human waste

 

Using farmyard manure and human waste as an energy source for fuel or as a supplement to wind and solar energy and at the same time as a fertiliser in agriculture may sound like science fiction, but DeBugger aims to do just that.

The DeBugger project - it stands for Demonstration of efficient Biomass Use
for Generation of Green Energy and Recovery of nutrients - was launched in 2013 and is being carried out by Outotec Sweden and Germany as well as the University of Stuttgart. They are working on how the energy and nutrients extracted from currently-unused human and animal biomass can best be put to purpose, while recycling the plant nutrients, nitrogen and phosphates for controlled fertilisation in agriculture. Science fiction? By the end of 2015 it may have become reality as by then DeBugger plans to have completed an extensive pilot project in Sweden. The future may be far closer than we think!

Alternatively, spreading excessive amounts of manure on fields, results in overfertilisation of soils and eutrophication (over-nutrition) of water. The direct consequence of elevated phosphate and nitrogen concentrations in inland and coastal waters is algal blooms.

Concentrated know-how through the KIC InnoEnergy network

“At the beginning of 2013, Outotec entered into a partnership with KIC InnoEnergy. The advantages of being a member of the KIC InnoEnergy community were immediately clear to us in that we benefit from a highly specialised network, in which our partners are working on similar topics as we are,” says Hermann. Thanks to KIC InnoEnergy, Outotec and the University of Stuttgart were able to form a collaboration. Furthermore, KIC InnoEnergy’s financial support enables the project stakeholders to further develop this innovative idea into a marketable solution.

More efficient drying systems

Engineers and researchers have met with several challenges in this project. Biomass waste that may serve as an energy source is also suitable for the recovery of the phosphates contained within it. For this purpose, a multi-level recovery chain has been developed where, in the first stage, a centrifuge or a filter press is used to mechanically separate a large part of water from the waste. The first innovation of the DeBugger project, a closed-loop steam dryer, developed mainly by Outotec’s Swedish researchers, is designed to save at least half the energy that was previously required to evaporate the water contained in the biomass. A gasification plant represents DeBugger engineers’ second innovation. It converts dried biomass into a fuel gas, which can then be used to produce electricity or transport fuels.

“A very important step has been the development of highlyefficient drying systems. Drying is important because it makes it more feasible that waste can be easily transported or processed further. Currently, a drying plant requires 800 kWh to evaporate a tonne of water. We want to develop a system that, by intelligent use of the energy contained in the off-gas streams, requires less than half the amount of energy,” explains Hermann.

DeBugger engineers plan to have the first drying machine finished and tested by the end of 2014. It is planned that a pilot plant with a capacity of several hundred kilograms per hour will go into operation at a waste-water treatment plant in Skelleftea, Sweden as early as the end of 2015.

“This will be the world’s first high-efficiency drying machine for sewage sludge, farmyard manure and biomass slurries, so this stage in the project is an exciting one for all of us,” says Hermann.

Last modified on Tuesday, 31 March 2015 02:24
Amy

639 comments

  • Comment Link Marko Marko 24 June 2019

    Write more, thats all I have to say. Literally,
    it seems as though you relied on the video to make your point.
    You clearly know what youre talking about, why waste your intelligence on just posting videos to your blog when you could be giving
    us something informative to read?

  • Comment Link Dorthea Dorthea 24 June 2019

    Very great post. I simply stumbled upon your weblog
    and wished to mention that I have really loved browsing your
    blog posts. After all I will be subscribing in your
    rss feed and I'm hoping you write again very soon!

  • Comment Link Mariano Mariano 24 June 2019

    And that is an investment risk price taking.

  • Comment Link Claire Claire 24 June 2019

    bookmarked!!, I like your website!

  • Comment Link Murray Murray 23 June 2019

    Now it's time to pick your specific investments.

  • Comment Link Demi Demi 22 June 2019

    Thanks for sharing your thoughts about Pilot.

    Regards

  • Comment Link Lelia Lelia 22 June 2019

    My spouse and I absolutely love your blog and find many
    of your post's to be just what I'm looking for. can you offer guest writers to write content to suit your needs?
    I wouldn't mind composing a post or elaborating on a number of the subjects you write concerning here.
    Again, awesome web log!

  • Comment Link Mel Mel 22 June 2019

    Incredible! This blog looks exactly like my old one!
    It's on a entirely different subject but it has pretty much the same page layout and design. Wonderful choice of colors!

  • Comment Link yeezy boost yeezy boost 21 June 2019

    I simply had to thank you so much yet again. I do not know the things that I would've followed without the ideas discussed by you over my topic. This was a fearsome situation for me, however , taking note of the well-written tactic you solved that forced me to leap with contentment. I'm thankful for your guidance and thus hope that you recognize what a powerful job you were doing instructing the others through the use of a site. I am sure you have never got to know any of us.

  • Comment Link Galen Galen 21 June 2019

    My brother suggested I might like this web site. He was totally right.
    This post actually made my day. You cann't imagine just how much time I had spent for this information! Thanks!

Leave a comment

Make sure you enter the (*) required information where indicated. HTML code is not allowed.